Type-writer.



PATENTED FEB. 18, 1908.

C. W. SPONSEL.

T YPE WRITER. APPLICATION FILED AUG. 18, 1905.

4 SHEETS-SHEET 1.

W/T/VESSE ATTORNEYS No. 879,207. PATENTED FEB. 18, 1908.

I 0. W. SPONSEL. TYPE WRITER.

APPLICATION FILED AUG. 18, 1905.

4 SHEETS-SHEET 2,

AUUR/VEVS PATENTED FEB. 18, 1908.

0. W. SPONSEL.

TYPE WRITER APPLICATION FILED AUG. 18, 1905.

4 SHEETS-SHEET 3.

A M a WITNE88E8:

No. 879,207. PATENTED FEB. 18, 1908.

" i 0. w. SBONSEL. TYPE WRITER.

APPLIGATION FILED AUG. 18, 1905.

W/TIVESSES: I mmnon ATTORNEYS 4 SHEETS-SHEET 4.

various features of the UNITED STATES PATENT. OFFICE.

CHARLES W. 'SPONSEL, OF HARTFORD, CONNECTICUT, ASS IGNOR TO PARKER MACHINE COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK..

TYPE-wanna.

To all whom it may concern:

Be it known that 1, CHARLES W. SPONSEL, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Im rovements in Typewriters, of which the f0 owing is a full, clear, and exact descri tion, such as will enable others skilled in t e art to which it appertains to make and use' the same.

This-invention relates to typewriters and the like and is especially adapted for. use in machines known as silent typewriters of the typeof that shown in United States patent to W. P. Kidder, No. 567,241, September 8, 1896. It will be obvious, however, that resent invention while particularly adapte for the production of a silent typewritlng machine are ca able of use in a variety of relations with ifferent t es of machines.

One 0 the objects of this invention is to provide mechanism so constructed as to eliminate impact or concussion of the moving parts during the operation of the machine.

Another object to provide means whereby the type-actuating devices may be easily adjusted toward and from the platen and maintained rigidly in such adjusted position.

Another object is to so construct the.

mechanism employed to control the movements of the ty e bars that the bearing partswill operate wit a minimum of wear.

Another object is to provide a connection between the type operating mechanism and the key levers such that the friction therebetween is reduced and the parts may be easily detached for purposes of adjustment, repair or renewal.

Another object-is the provision of a stop adapted to arrest the motion of the key levers without im act or concussion, and, therefore, noiseless y.

Other objects will be in part obvious and in art pointed out hereinafter.

he invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplified in the mechanism hereinafter described, and the scope of the application of which will be indicated in the following claims.

perspective view of a portion of one of the v Specification of Letters Patent. Application filed u m. 1a. 1905. Serial lo. 274.660.

- reamed Feb. 18, 1008.

same. Fig. 2 is an elevation of the same partly in section. Fig. 3 is an elevation partly in section showing the adjusting mechanism for the t e actuating evices. Fig. 4 is an end elevation of the same. Fi 5 i s a plan viewof the toggle mechanism s owing the manner of constructing the joints. Figs. 6 and 7 are details showing the connecting means between the type-actuatin mechanism and the impression levers.

wiper cam mechanism. Figs. 9 and 10' are elevations showing the embodiment illustrated in Fig. 8 in different positions.

Similar reference characters refer to simi- 1211' parts throughout the several" views.

As tending to render better understood several of the various features of my invention, it may here be noted that in machines of this type, particularly those wherein the printing is done by pressure and not by impact, it is necesary to adjust the type carrymg mechanism to and from the platen of the, machine in order that the type may be brought to a uniform printing position, and it ig. 8 is an elevation of a dlfferent embodiment of the have, also, found it desirable to arrange stops for the impression levers or other movable mechanism whereby motion may be arrested without im act or concussion, thus eliminating the isagreeable element of noise revalent in machines of other types. The a ove and other advantages are secured in constructions of the nature of that hereinafter described.

Referring now to the drawings, a bracket 1 is secured to the frame A of the machine by means of a screw 2 passing through an enlarged hole 3 in the bracket 1, which bracket is adapted to slide in a groove 4 in alinement with a toggle joint mechanism hereinafter described. There is also provided an adj'usti'ng screw 5 which is tapped into the frame A below bracket 1 and having a large circular head 6 bearing against a shoulder 7 formed by a cut away portion of said bracket 1 and which cut away portion also rests on the circumference of the head 6 of screw-5.

Swinging lever 8 of hardened steel and provided with a cam ath 9 is journaled upon a hardened steel col ar 10 secured between the bifurcated ends of extension 11 on bracket 1 by means of a soft steel rivet 12. Link 13 consisting of members 14 and 15 has secured therebetween at one end a collar 16 of hardened steel upon which is journaled the swinging lever 8, and at its opposite end a soft -steel rivet 17 secures between said members 14 and 15 a collar 18 of hardened steel operating to space apart members 14 and 15 and upon which a bushing 19 is journaled. Bushing 19 is provided with a circumferential groove and is knurled at one side as at 21. Type bar 20 having an opening at one end is a apted to receive bushing 19 therein. Some of the material of type bar 20 is then spun into the groove in said bushing and firmly holds the parts a ainst rotation. Type bar 20 is adapted to s ide to and from the platen in guides 22 positioned upon bed 23. Cam roll 24 secured to a hardened steel bracket 1 is provided with a hardened steel cam roll 27 journaled upon a hardened steel collar 28 which is secured between the members 29 and 30 of said cam roll lever 24 by means of soft steel rivet 31. Cam roll 27 is ada ted to traverse the cam path 9 of swinging ever 8, thereby swingin the same on its pivot to straighten the togg e constituted by said lever 8 and link 13 and operating to project the end-thrust type bar 20 toward the platen 32 to impression with a uniformly retarded velocity. Said type bar 20 is adapt ed to reach the "impression point, as this point may be termed, at the instant of the straightening of the toggle as shown in Fig. 2, insuring a pressure of the printing devices without impact or concussion against the printing surface. Cam roll 27 at this point reaches a position near the end of cam path 9, further movement of the type bar being revented by the dwell in the end of swinging ever 8.

The "dwells 33 and 33 at each end of cam path 9 respectively are secured by so shaping the surface of the cam path at these points that when swinging lever 8 is in normal position or in an extended position, the said surfaces will be on arcs substantially the same as the arc traveled by cam roll 27. -It will therefore be seen that cam roll 27 is allowed a slight play in each end of the cam path 9 60. without effecting a movement of swinging lever B, and is prevented from contacting with the closed ends of said cam path.

IB the term impression point, as herein use in the specification and claims, I mean 65 that point or location assumed by a printing device during the operation of printing a character upon a surface. While in this embodiment of my invention, I have constructed a swinging lever 8, the collars 10, 16, 1.8, 25 and 28, the bushin 19 and cam roll 27 of hardened steel an the several rivets employed of soft steel, I do not intend to limit myself to the employment of any particular material. It is sufficient for the accomplishment of the purposes of my invention to construct thefirst-mentioned parts of acomparatively hard material, or any material adapted to resist wear resulting from friction, while the rivets may be made of any suitable material capable of being headed or upset as is necessary in the process of riveting. I prefer tospin the type bar 20 into the bushing 19, as shown, but do not wish to be understood as limited to this specific form of attachment, as the parts may be secured together in any desired manner, although the .form shown is peculiarly advantageous in this construction.

On a preferably hardened steel collar 33 secured between the members 29 and 30 of cam roll lever 24 by soft steel rivet 34, a hardened steel member 35 is journaled. Such parts may, however, be constructed of any suitable substance adapted to accomplish the results above set forth. An adjust- 5 able connecting rod 36 is threaded into member 35 at 37 and is provided with a bent end 38 entering an opening in a key lever 39 and maintained in connection therewith by means of clip 40 pivoted at 41 to said key lever, and 00 provided with an offset portion 41 to engage the bent end and having a turned over portion 42 resting on the upper edge of key lever 39. The clip 40 is adapted to be turned upwardly on its pivot to release said connecting 5 rod 36 when it is necessary to adjust the same and can then be swung to the position shown to maintain the parts in engagement. Key lever 39 is ivotally mounted at its end upon rod 43 and has pivoted thereto at 44 a wiper cam 45 provided with a spring 46 attached to key lever 39 at 47. It will, of course, be understood that key lever 39 is one of a series, the others of the series being similarly constructed, but are omitted in the interest of clearness of illustration. Placed below the wiper cam 45 is an adjustable bar or plate 48 preferably hardened, and I also preferably harden wiper cam 39. Bar or plate 48 extends the entire length of the ma- 12o chine beneath the key levers and is supported by means of adjusting screws 49 which are threaded through brackets, one of which is shown at 50, said brackets being secured to a fixed portion of the framing of the machine. '125 It will be understood that adjusting screws 49 may be manipulated to raise or lower said plate, thereby regulating the throw of the key levers inasmuch as wiper cams 45 rest upon plate 48 and are swung to arrest the and finall downward movement of the key levers by i above construction and many apparently engagement with said plate when said key levers are de es sed.

Figs. 1 an 8 show the impression lever in its upward position. In this position, the projecting end of wiper cam 45rests on plate 48, and in ts downward position, said'wiper camis slid forward against the influence of spring 46 until it assumes theposition shown in Figs. 2 and 10 of the drawing, when the key lever 39 comes to a stop. y reason of the constant engagement between the wiper cam 45 and late 48, the downward movement of the ey lever is gradually retarded arrested without concussion or impact. pring 46 acting through the medium of wiper cam 45 operates to return the key lever to its upward position, and with it the toggle, as clearly shown in Fig. 1, withdrawing the printing devices from the impression point. A cushion 51 is positioned upon the bracket 1 and is adapted to be engaged by the swinging lever 8 in returning to the osition shown in Fig. 1 in order to noiseless y arrest the returning movement of the actuating parts.

In Figs. 8, 9 and 10 I have illustrated a different arrangement of the wiper cam. In

this modification I pivot wiper cam 45 to the key lever as before, in such position as to engage bar or plate 48 and attach to key lever 39 an additional auxiliary spring 52, connecting the same with a fixed part of the machine at 53. By this arrangement I can materially diminish the tension of spring 46, inasmuch as spring 52 assists in returning the key lever to initial position. It will be also noted that this arrangement will materiallydiminish the friction between key lever 39 and bar or plate 48, insuring a more accurate stop for saidlever at the end of itsstroke.

It will thus be seen that I have provided a construction whereby the tog le carrying the printing devices may be easi y adjusted toward or from the platen to provide for a uniform pressure to be exerted by said printing devices against the printing surface. The construction of the-bearin s of the mechanism constituting the type ar actuating devices, insures an-operat1on w1th a minimum of wear. The connecting rod 36 is easily detached from the key, lever mechanism for purposes of adjustment, and readily secured in position to operate with little friction. The downward movement of the key levers .is uniformly retarded and finally arrested l widely different embodiments of m invention could be made without departing from the scope thereof, I intend that all matter contained in the above description'or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a typewriting machine, in combination, a typebar, means adapted to carry a typebar, means for adjusting said means to or from the platen, and means acting on the first-named means to clamp the second-mentioned means in position after adjustment.

2. In a typewriting machine, in combination, a typebar, means adapted to carry a t pebar, screw-threaded means for adjusting the first-mentioned means toward or from the platen, and means actin on said firstmentioned means to clamp sai screw-threaded means in position after adjustment.

3. In a typewriting machine, in combination, a typebar, a bracket adapted to carry a typebar, means adapted to adjust said bracket toward or from the platen, and means actingon the bracket to cause the same to clamp said adjusting means in.position after movement.

4. In a typewriting machine, in combination, with the frame of a typewriter, a bracket, means carrying type devices positioned upon the bracket, means engaging the frame and also engaging the bracket to adjust the same toward or fromthe platen, and means engaging the bracket to cause, the same to clamp said adjusting means after adjustment.

5. In a typewriting machine, in combination with the frame thereof, a bracket, means carrying a type device positioned upon the bracket, a screw operating in the frame and having a head adapted to engage the bracket and also adapted when the screw is rotated to adjust the bracket with respect to the platen, and means extending throu h the bracket and engaging in an opening n the frame adapted to cause the bracket to clamp said screw in position after rotation.

.by a-rotation thereof to a( just the same with respect to the platen, and means extending through the bracket operating in the frame adapted to clamp said screw-threaded means between said shoulder and said bracket to prevent movement thereof after rotation.

7. In a typewriting machine, in combination with the frame thereof provided with a 139 bracket and operating'in the frame to cause said bracket to clamp said screw-threaded means against said shoulder to hold the same against rotation. 8. In a typewriting machine, in combination with the frame thereof, a shoulder on said frame, screw-threaded means operating in the frame and provided with a head resting on said shoulder, a bracket resting on the frame and sliding in a groove therein and also resting on said screw head and adaptedto be adjusted thereby with respect to the platen, said bracket bein provided with an opening therethrough, and means extending through said opening and operating in the frame to cause said bracket to clamp said screwthreaded means against rotation.

9. In a typcwriting machine, in combination with the frame thereof, a shoulder on said frame, screw-threaded means operating in the frame and having a head adapted to rest on the shoulder, a bracket resting on said frame and also on the head of said screwthreaded means, said bracket having an opening therethrough, screw-threaded means of substantially smaller diameter than said opening extending therethrough and operating in the frame and adapted to cause said bracket to clamp the first-mentioned screwthreaded means against said shoulder to prevent rotation after adjustment.

10. In a typewriting machine, in combination with the frame thereof, said frame being provided with a shoulder and agroove, screwthreaded means operating in the frame and provided with a circular head adapted to rest on a similarly shaped surface on said shoulder, a bracket sliding in the groove in the frame and adapted to rest on said frame and also on the head of screw-threaded means, a shoulder on said bracket adapted to be engaged by the head of said screw-threaded means to adjust the bracket, saidbracket being provided with an opening therethrough, screw-threaded means of substantially smaller diameter than said opening and extending therethrough to operate in theframe, and being provided with a headadapted to engage said bracket to cause the same to clamp the head of the first-mentioned screw-threaded means against the shoulder on said frame to prevent rotation after adjustment.

1 1. In a typewriting machine, in combination with the frame thereof provided with a shoulder, screw-threaded means having a circular head operating in the frame and adapted to rest upon a curved surface 10- shoulder, screw-threaded means head of said screw-threaded means a ainst.

movement and also adapted upon a di erent operation to release said screw-threaded means whereby the bracket may be adjusted.

12. In a typewriting machine, in combination with the frame thereof provided with a rovided with a circular head operating in t e frame and adapted to rest upon a curved-surface on the shoulder, a bracket sliding in a groove on said frame and resting thereon, and also resting upon the head of said screw-threaded means and having a curved surface for engaging therewith, a shoulder on said bracket adapted to be engaged by the head of said screw-threaded means, said bracket being adapted to be adjusted with res ect to the platen by a rotation thereof, said liracket be ing also provided with an opening, screwthreaded means of substantially-smaller diameter than that of said 0 ening extending therethrough to enga e a threaded opening in the frame and a apted to engage the bracket to cause the same to clamp the head of the first-mentioned screw-threaded means to permit a movement after adjustment and also adapted upon a different operation to release said bracket from the afore-mentioned screw-threaded means whereby the bracket may be adj usted.

13. In a ty ewriting machine, in combination, a pair of members, a collar of comparatively hard material, a rivet extendin through said collar and said members an holding the parts in immovable relation with respect to one another, a bushing of comparatively hard material journ aled on said collar,

16. In a typewr'iting machine, in combination, .a toggle, one of the elements thereof comprising a fpair of members, a rivet of comparatively so t material joining said members,

secured therebetween by means of said rivet,

, tion,'a toggle, one 0 the elements thereof a collar of comparatively hard material se cured therebetween by means of said rivet, a. bushing of com aratively hard material journaled u n sai collar, and a member spun into sai bushing.

17. In a typewrltin machine, in combinacomprising a pair of members, arivet of comaratlvely soft materlal oining said n1en1 ers, a collar of comparatively hard material a bushing of comparatively hard material journaled upon said collar, a member s un into said bushing, and a type bar carrie by said member. g

18. In a typ'ewriting machine, in'combination, actuating means for the rinting devices, a key lever, a rod securer to said actuating means and having a bent end entering through an opening in the key lever, and pivoted means carried by sai key lever ada ted to engage said bent end to maintain sai rod and key lever in engagement.

19. In a t pewriting machine, in combination, a key, ever, a rod carried thereby, and means pivoted tosaid key lever adapted to swing over said rod to maintain the same in engagement with said key lever and capable 0 a different 0 eration whereby said rod may be disengaged 20. In a t pewriting machine, in. combination, a key ever, type actuating devices, an adjustable connector for said actuating devices, said connector having a bent end entering an opening through the key lever, and a clip pivoted on said key lever adapted to be swung over the bent end of said connector to maintain the same in engagement with said lever.

connector adjustably secured to said type actuating devices and having a bent end adapted to extend through an opening in the key lever, and a clip provided with an offset portion adapted to engage said bent end to maintain the same in engagement with the key lever.

22. In a typewriting machine, in combination, type actuatin devices, a key lever, a connector adjustab y mounted in said type actuating devices and having abent end adagte-d to extend through an o ening in said key ever, a clip pivoted to said ey lever and ada ted to be swung over the bent end of sai connector to maintain the same in engagement with said key lever, and means carried by the clip adapted to limit the pivotal movement of the same on said key lever.

23. In a typewriting machine, in combination, a key lever, a wiper cam pivoted to said key lever, and means carried'by the frame of the machine adapted to constantly engage said wiper cam, said cam, by reason of its engagement with said means being adapted to iially' retard and ultimately to arrest wit out concussion the downward movement of said key lever.

24. In a typewriting machine, in combina-' tion, a key lever, a wiper cam pivoted to said lever, and a plate fixed to the frame of the machine adapted to be constantly engaged by said wiper cam, said cam be reason of its engagementwith said plate being adapted to gradually retard and ultimately arrest with-' out concussion the downward movement of gagement with said plate being adapted to gradually retard and ultimately arrest without concussion the downward movement of said key lever.

26. In a type'wri'ting machine, in coinbination, a key lever, a wiper cam ivoted thereon, an adjustable late secure to the frame of the machine and adapted to be constantly engaged by said wiper cam, and means attached to the key lever acting on said wiper cam to cause a constantly increasing resistance to the downward movement of said key lever.

27. In a typewriting machine, in'combina tion, a key lever, a wiper cam pivoted thereto, a plate adj ustably secured to the frame of the machine, and a spring attached to said key lever and also attached to said wiper cam and operating in conjunction therewith to furnish a constantly increasing resistance and ultimately arrest the downward movement of the key lever.

28. In a t pewriting machine, in combination, a key l ever, a wiper cam ivotally secured thereto, an adjustable p ate secured to the frame of the machine and adapted to be constantly engaged by said wiper cam, and a spring connected to the key lever and also to said wiper cam and adapted in conjunction with said wiper cam to oppose and ultimately arrest the downward movement of said key lever and also adapted to return. said key lever to its normal position after the completion of said downward stroke.

29. In a typewriting machine, in combination, a key lever, a stop, means interposed between said key lever andsaid stop adapted to inter ose a constantly increasing resistance ant ultimately arrest the downward movement of said key'lever, and means connected to said key lever and to a fixed part of the machine adapted to return said key lever to its normal position after the completion of its downward stroke.

tion, a key lever, a stop, a pivoted cam interposed between said key lever, a spring attached to said cam and to a fixed part of the machine, said cam acting in conjunction with said spring operating to furnish aconstantly increasmg resistance and ultimately to arrest the downward movement of said key lever and to return said key lever to its normal position after completion of its downward stroke, and auxiliary means attached to said key lever adapted to*assist the carrying of said key lever to its normal position.

32. In a typewriting machine, in combination, a key lever, a stop, a pivoted cam interposed between said stop and said lever, a

- spring secured to said cam and attached to a fixed part of the machine, said camacting in conjunctionwith said spring to interpose a constantly increasing resistance and ultimately to arrest thedownward movement of said key lever, and an auxiliary spring attached to said key lever and also attached to.

a fixed part of the machine operating to assist said cam and said first-mentioned spring to return said key lever to its normal position after completion of its downward stroke.

33. In a typewriting machine, in combination, a bracket, a toggle for operating the rinting devices positioned thereon, a key lever, an adjustable connector between said toggle and said key lever, a cam carried by said key lever, and a stop adapted to furnish a constantly increasing resistance and finally arrest without concussion the downward stroke of the key lever.

34. In a typewriting machine, in combination with the frame thereof, an adjustable bracket positioned thereon, means for adjusting said bracket to and from the platen, means engaging the bracket to fasten said adjusting means against movement, typeactuating means carried by said bracket, a

key lever,- adjustable means connecting said typeactuating devices with said key lever, a cam pivoted to said key lever, and a stop adapted to be constantly engaged by said cam and also adapted to furnish through the medium of said cam a constantlyv increasing resistance to the downward stroke of the key lever. j

35. In a typewriting machine, in combination with the frame thereof provided with a groove, an adjustable bracket sliding in said groove 4 resting upon said frame, screwthreaded means operating in the frame and adapted to adjust said bracket with respect to the platen, means extending through said bracket adapted to clamp the same against said screw-threaded means to prevent a movement thereof after adjustment, a toggle mechanism adapted to ca the printing devices pivoted to said brac et, one of the members of said toggle being provided with a cam path, means traversing the said cam path to straighten the toggle to roject the printing devices with a uniform y retarded velocity toward the platen and to cause the same to reach the impression oint at' the instant of the straightening o the toggle, the member provided with the cam path being so constructed as to prevent a further movement of the printing devices when they have reached the impression point, a key lever, an adjustable connector between the toggle mechanism and the key lever, a cam pivoted to said key lever, an adjustable stop, and means connected to said cam and also to the key lever and engaging said stop to maintain said key lever in its upward position, said means being adapted through the medium of said cam to interpose a constantly increasing resistance to the downward motion of the -key lever and adapted also through the medium of the cam to return the said key lever to its upward position upon the completion of its downward stroke.

In testimony whereof I affix my signature, in the presence of two witnesses.

o. W. SPONSEL.

Witnesses:

WM. H. Homss, NELLIE PHOENIX. 

